The Mineral Industry, Volume 6Scientific Publishing Company, 1898 - Mineral industries |
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Common terms and phrases
acetylene alloy aluminum American amount anode antimony assaying average bismuth Boulder County calcium calcium carbide carbide carbon cement Cent chamber chiefly chloride clay coal coke Colorado concentrates consumption containing copper cost County Cripple Creek crude crushed cyanide cyanide process deposits district electrolytic Engineering exported furnace galena gases Genth Gold Mining gravel heat important increase iron latter lead lime limestone lodes long tons manganese manufacture material matte metal method metric tons miles mill MINERAL INDUSTRY nickel nitrate obtained operation output oxide patent phosphate plant plates platinum potassium pouds precipitated present production pyrites quantity quarries quartz quicksilver reduced refined reported roasting rock salt schists shaft shipments short tons Siberia silver slag slate smelting soda solution South statistics steel sulphate sulphide sulphuric acid sylvanite tellurides tellurium tion United veins washed yield zinc
Popular passages
Page 396 - This southern gypsum area is the largest in Kansas, and, with its continuation in Oklahoma and Texas, forms the largest gypsum area in the United States. The rock extends from near the town of Medicine Lodge westward through Barber and into Comanche county, southward into Oklahoma and Texas, and passes under the Tertiary gravels to the north.
Page xxvi - Sil%-er: rupee and divisions. Gold : 5. 10. 20, 50, and 100 lire. Silver : 5 lire. Gold: 5. 10, and 20 yen. Silver: 10, 20, and 50 sen.
Page xxvi - Gold : 25 pesetas. Silver : 5 pesetas. Gold : 10 and 20 crowns. Gold : 5, 10, 20, 50, and 100 francs. Silver : 5 francs. Gold : 25, 50, 100, 250, and 500 piasters.
Page xxvii - Students preparing for First-class Certificates. By CALEB PAMELY, Mining Engineer and Surveyor ; Member of the North of England Institute of Mining and Mechanical Engineers ; and Member of the South Wales Institute of Mining Engineers. With 700 Plans, Diagrams, and other Illustrations.
Page 42 - ... 500° F., although this loss of strength is only while the metal is kept at the high temperature. It serves as an annealing operation, and reduces permanently only the higher tensile strength produced by cold rolling or otherwise cold working the metal. Aluminum does not volatilize at any temperature ordinarily produced by the combustion of carbon, even though the high temperature be kept up for a considerable number of hours.
Page 41 - ... force produced by the difference in chemical action between aluminum and any of the common metals with which it comes in contact in a voltaic element), is equal to the sum of the electro-motive forces between all the intervening metals, it follows that care should be taken that aluminum exposed to water or other solutions shall not come in contact with any other metal, which will cause a voltaic couple to be formed. Aluminum can be protected in places where it is exposed to...
Page 420 - ... for exportation, under the direction of the proper officer having charge thereof as aforesaid, whose certificate, describing the articles by their marks or otherwise...
Page xxvi - From one of these a certain number of kilogrammes were prepared, from the other a definite number of metre bars. These standards of weight and length were Intercompared, without preference, and certain ones were selected as International prototype standards. The others were distributed by lot, in September, 1889, to the different governments and are called National Prototype Standards.
Page xxvi - By the concurrent action of the principal governments of the world an International Bureau of Weights and Measures has been established near Paris. Under the direction of the International Committee, two ingots were cast of pure platinum-indium in the proportion of 9 parts of the former to i of the latter metal.
Page xxvi - Silver: sucre and divisions. Gold: pound (100 piasters), 5, 10. 20. and 50 piasters. Silver: 1, 2, 6. 10. and 20 plasters. Gold: 5, 10, 20, 50, and 100 frs. SSilver: 5 frs. Gold: 5, 10, and 20 marks.